ID 683349
Date 10/04/2021
Public

## 4.1.4. Interface Definition Example: Component with Both Scalar and Pointer Arguments

The following design example illustrates the interactions between a component's interfaces and signals, and the waveform of the corresponding RTL module.
component int dut(int a, int* b, int i) {
return a*b[i];
}
Figure 2. Block Diagram of the Interfaces and Signals for the Component dut
Figure 3. Waveform Diagram of the Signals for the Component dutThis diagram shows that the Avalon-MM read signal reads from a memory interface that has a read latency of one cycle and is non-blocking.

If the dut component raises the busy signal, the caller needs to keep the start signal high and continue asserting the input arguments. Similarly, if the component downstream of dut raises the stall signal, then dut holds the done signal high until the stallsignal is de-asserted.